Is it leaving marks on the fabric when you use it?
Find some scraps of something that you don't care bout to try it.
If it was mine - if it did not leave marks on the fabric - and did not smell "funny" - I would probably continue to use it.
If it did leave marks on the fabric - go to plan B - and attempt to get them off.
Sorry that you "hit a pothole" when things seemed to be going well again.