What topics does this cannabis study cover?

This study covers research on: Mental Health.

Where was this research published?

Published in JMIR formative research on June 16, 2026.

Real-time air monitors help parents reduce cannabis smoke exposure to children

Using In-Home Air Quality Monitoring to Reduce Cannabis Secondhand Smoke Exposure in Children: Quantitative Pilot Feasibility Study.

JMIR formative research • June 16, 2026 • Moderately Relevant

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AI Summary

This pilot study examined whether real-time air quality monitors could help reduce cannabis secondhand smoke exposure in households with children. Researchers recruited 14 caregivers who smoked cannabis indoors and lived with children under 16, providing them with Awair Element air quality monitors that tracked pollutants like PM2.5 and volatile organic compounds (VOCs). Over a 3-week trial, participants received daily surveys and health education materials, with the monitors providing continuous feedback on indoor air quality. The results were encouraging: 85% of participants engaged with the monitor daily, and 46% reported significant reductions in the number of days their children were home while cannabis was being smoked—dropping from an average of 4.5 days per week to 2.8 days.

Beyond the behavioral changes, the monitors appeared to facilitate important household conversations. 62% of participants reported the monitors helped spark discussions about changing in-home smoking rules, and notably, 100% of households experienced no disagreements about these discussions—suggesting the objective data provided by the monitors helped frame the conversation constructively. Additionally, 62% of participants indicated they either reduced their smoking habits or actively considered changing them, demonstrating that real-time feedback about air quality and exposure risk can motivate behavioral change. While overall PM2.5 trends across all participants weren't statistically consistent, participants who showed the largest drops in measured particulate matter also reported the biggest reductions in children's exposure.

These findings suggest that affordable air quality monitoring may serve as an effective harm reduction tool for families dealing with cannabis smoke exposure. Unlike traditional health messaging, the objective, real-time feedback from IAQ monitors appears to resonate with users and empower them to make changes that protect their children. The study authors emphasize that this scalable, technology-based approach warrants further testing in larger, controlled clinical trials to confirm whether air quality monitors could become a standard harm reduction resource for households with cannabis-using parents.

📄 Original Abstract

An estimated 5 to 8 million US children live with a parent who uses cannabis, and most cannabis users report smoking cannabis inside their homes, placing children at risk for cannabis secondhand smoke (cSHS) exposure. Indoor air quality (IAQ) monitoring provides real-time feedback on airborne pollutants and has shown promise in reducing in-home tobacco secondhand smoke exposure, suggesting its potential as an effective harm reduction strategy for cSHS. This pilot study evaluated the feasibility, acceptability, and preliminary effectiveness of using low-cost, off-the-shelf IAQ monitors to increase caregivers' awareness of children's cSHS exposure risk and to change smoking behavior. Secondary aims were to assess participant engagement, perceived usefulness, and household communication regarding in-home cannabis smoking. Between February 2025 and April 2025, 14 adults who smoked cannabis indoors and lived with at least 1 child aged younger than 16 years were recruited primarily via targeted social media advertisements and completed a 3-week trial. Participants received an Awair Element IAQ monitor, printed health education materials, and text messaging prompts for brief surveys. The IAQ monitor continuously measured PM2.5, VOCs, CO₂, temperature, and humidity. Daily surveys captured self-reported PM2.5 readings and recent cannabis use, while baseline and end-of-study assessments evaluated IAQ perceptions, cSHS risk awareness, and in-home smoking behavior. Survey results were summarized via descriptive statistics, and linear mixed-effects models were used to characterize objective IAQ trends. Six additional adult household members provided parallel end-of-study data. Reported engagement was high, with 85% (11/13) of participants indicating that they reviewed the monitor at least daily. The average number of days in the previous week that a caregiver reported a child being home while cannabis was smoked declined from 4.5 (SD 2.2) at the trial start to 2.8 (SD 2.9) at the end (6/13, 46% had a reduction; 1/13, 8% reported an increase). Furthermore, 62% (8/13) of participants reported that they reduced (4/13, 31%) or thought about changing (4/13, 31%) their smoking habits. Around 62% (8/13) of participants agreed or strongly agreed that IAQ monitoring helped drive conversations about changing indoor smoking rules, while 100% (13/13) reported no IAQ-driven disagreements among household residents regarding in-home smoking rules. A linear mixed-effects model did not indicate a consistent trend in PM2.5 levels across participants over time (β=-0.28; SE 1.13; P=.81), but there was heterogeneity in trends, and those with the largest reductions in PM2.5 over the trial had the largest reduction in reported children's cSHS exposure. In-home IAQ monitoring was feasible and perceived as useful among caregivers who smoked cannabis indoors. Real-time IAQ feedback supported risk awareness, promoted family dialogue, and coincided with reductions in in-home smoking around children. These findings suggest that IAQ feedback may represent a scalable tool for reducing children's cSHS exposure and merits further testing in larger, controlled trials.

Paper Type

📄 Research

Publication

Journal: JMIR formative research
Published: June 16, 2026
PMID: 42302266
DOI: 10.2196/89820

Authors (6)

Vincent Berardi Department of Psychology, Crean College of Health and Behavioral Science, Chapman University, 1 University Drive, Orange, CA, 92866, United States, 1 (714) 516-5883.
Bradley N Collins Department of Social and Behavioral Sciences, Barnett College of Public Health, Temple University, Philadelphia, PA, United States.
Laura M Glynn Department of Psychology, Crean College of Health and Behavioral Science, Chapman University, 1 University Drive, Orange, CA, 92866, United States, 1 (714) 516-5883.
Eusabeia K Silfanus Department of Psychology, Crean College of Health and Behavioral Science, Chapman University, 1 University Drive, Orange, CA, 92866, United States, 1 (714) 516-5883.
Darby G Lyons Department of Psychology, Crean College of Health and Behavioral Science, Chapman University, 1 University Drive, Orange, CA, 92866, United States, 1 (714) 516-5883.
+1 more authors