Would you use toilet bowl cleaner with hydorcholoric acid in the winter time when you can't open the windows?
I never use the bathroom fan and it seems to have broken some time in the last 20 years.
If you're in another room 30 feet away and you think you notice the smell/fumes, but when you get closer you don't notice anything, certainly nothing stronger, were you imaiging it in the first place?
What will it do to me if it's really filling the house?