Can the smell of cigarettes come through the bathroom vent in the apartment?

I sometimes smell cigarettes in the bathroom of my apartment because there's no one smoking at home and it smells like cigarettes. I don't know if this is coming through the drain or through the vent. I think the sewer is going to be a little hard, so I'm thinking about it

Can the smell of cigarettes actually come over to the bathroom vent?

2698 2018-06-29 Gentleman

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