Solvents, like aerosols, can make your throat swell and close up when breathed in high volumes through cloth or directly into the nose or mouth. This can happen any time someone misuses solvents.
If your friend falls unconscious after using alcohol or drugs, call 999 and check their airway and breathing. If they have a clear airway and are breathing, put them in the recovery position to prevent them choking on their own vomit.
Frequent use of cannabis may affect fertility. It can cut a man’s sperm count and can suppress ovulation in women. If you’re pregnant, smoking cannabis may increase the risk of your baby being born smaller than expected.