3 min read
Thirdhand Aerosol: Does Vaping Leave a Residue—and Does It Matter?
Thirdhand smoke—the residue left by cigarettes on surfaces—is a documented health risk. Thirdhand aerosol from vaping is understudied. The preliminary evidence suggests minimal residue. The science is immature.
Cigarette smoke deposits nicotine, TSNAs, and other chemicals on surfaces—thirdhand smoke—that persists for months. Vape aerosol contains nicotine but far fewer non-volatile compounds—and dissipates rapidly. **Thirdhand aerosol from vaping is understudied. The preliminary evidence suggests the residue is minimal compared to cigarette smoke—orders of magnitude less. The science is immature. The precautionary assumption—treating it as equivalent to thirdhand smoke—is not evidence-based.**
