Room smells like marijuana or hashish

Oh yes, no one is smoking weed here or in the neighborhood either

THC is the toxic active ingredient content of a substance. To my knowledge, odors are not included in that, as they can have an active ingredient, at least not in a relevant dose.

by the way, there are plants that smell the same. Indoors and outdoors.

Okay! And how does that help the OP now?

Well, then take a look at what’s growing outside. Also touch and rub it sometimes, it’s not always, so the wind brings it into the house