Does denture cleaner cause a bad taste in the mouth?

Rinse it off well: You should rinse the denture thoroughly with water after you use denture cleaner, so there should be no taste whatsoever. Also use a denture brush and plain water to remove any debris that might harbor bad taste and odor. If your denture has had a soft reline, that material can absorb odors that could cause a taste. If this is the case, i would get a hard reline that won't absorb any odors.

No: Quite the opposite, keeping the denture clean should leave you with a fresher feeling mouth.

Certainly can: Must be sure to rinse thoroughly. After cleaning we always spray the patients' dentures with listerine, to freshen them.

Yes : And it is harmful. You must rinse your dentures well after soaking them in cleanser.