What causes bad odors on surfaces? Remove odor with steam – a quick method

There are many reasons.  Many have to do with bacteria.

Several helpful chemicals including the use of the proper high temperature steam can help.

Some bacterial pathways to odor

10 Most Common Causes of Bad Smells at Home

Can steaming remove odor -Yes

Bacteria, bacterial colonies and odor. Yes some smell like rotten eggs, some of ammonia and a little worse.