Weird smell in bathroom?

[Rozette]

I was wondering if anyone had weird smells in their bathroom only after 1 person uses it. Like a weird chemical smell.

A little bit of backstory: this is about my bf in the past he lied about allot of stuff only has admitted to smoking weed en hash but says he is over that now. But couple of years ago I did find a bottle of yellowish powder in his car with his weed stash. He denied it existed, long story but he denied everything always and had friends lie to me about it. Not even talking about the rest of his behavior.

Weird chemical smell = crack. Might be, might not be. I would be suspicious.

The smell could be in his urine and that is what you are smelling , perhaps some of the drugs he uses leaves a residue of some sort .

I googled it and this came up :

Yes
Yes, some illegal drugs can make urine smell. For instance, methamphetamine is known to produce a strong, ammonia-like odor, which can be similar to cat urine. This odor is a byproduct of the drug's manufacturing process and can linger in clothing, furniture, and even the air. The smell of meth can also be compared to harsh industrial chemicals, paint thinner, or nail polish remover