4 ms·
It's been shown in studies, such as https://www.nbcnews.com/health/health-news/hvac-systems-spread-thirdhand-smoke-n872851 https://www.nbcnews.com/health/health
by apta 7y ago
It's been shown in studies, such as https://www.nbcnews.com/health/health-news/hvac-systems-spread-thirdhand-smoke-n872851 https://www.nbcnews.com/health/health-news/hvac-systems-spre...
- JohnFen 7y agoThat article does not provide any evidence that thirdhand smoke is a real health hazard.