Depends on how ventilated the air is, and how much is smoked. Usually up to an hour for light/moderate smokage, and possibly up to two hours for heavy smoking.
I used to smoke in my room daily after my parents went to bed. They didn't approve of my habbit, and certainly wouldn't be okay with me smoking it, or anything for that matter, in my bedroom. They never suspected a thing, except when I tried to smoke cigarettes in my room.
hii
About 15 days.
Forever!
for about a hour
it will stay in there for about 2 years
for 23 seconds.
3 months
just dont do it.
90 days
3 weeks
3 weeks
Marijuana can typically be detected in a saliva swab test for up to 72 hours after use. However, individual factors such as metabolism and frequency of use can impact detection times.