Maybe you need to change your mop head or remove the mop head and soak it in baking soda

Have you tried replacing the filter?

The next time you use it sprinkle some bakig soda on the floor and run the cleaner over it. That should get into the mop head and may get rid of the smell

oilpainter, just to be sure we're talking about the same "part", when I say "mop head", I'm referring to the plastic housing where the steam comes from. Sounds like maybe you're talking about the mop "pad"...the microfiber pad that comes off and goes in the washer. I don't see how running over baking soda could eliminate an odor coming from within the mop head.
Monica

i love this vac and steam for my hardwood floors but i do to have this smell and to me it smells like piss i have tried everything to get the smell out is there anything that i can do

I got mine for this past Christmas and have only used it a few times because it smells terriable! Would a brand new one need a new cartridge to get rid of the smell?
thanks

I own a vac and steam - and I get an awful garbage/rotten fish smell everytime I steam ... Not the clean smell I'm after so although I love the usability I may return as this is the second time I've changed filter

I'm the OP and I'm no longer having the stinky smell from my beloved Bissell steam mop. Haven't had the problem in years. I didn't do anything different. It just fixed it's self :) Can't imagine what it was and how/why it stopped. I just know it was coming from inside the machine. It wasn't the water bottle or the mop pad.

Apparently it's not the mop itself it's the pads.

Did anyone found a solution ? We have this mop since November and since 1 month ago it started to smell like rotten fish. We tried everything, we changed the pads,we cleaned with vinegar, nothing works!

So do I have same problem with bad smell. I changed the pads, also the filter, cleaned every time water tank. After changing filter, couple of times was good, but now bad smell comes back again. Anyone knows what to do?

Thanks!

It's December 3, 2021, I've used my Bissell steam mop 1867, for several years, just in the kitchen, and it just started to smell like sewer, when a goose neck has gone dry. I'm overdosing the house with Lysol, turned on the attic fan trying to suck out the stink. And it's darn cold outside. It's hard to get rid of the nastiness. I bought a new pad and filter, and I use clean water. Maybe I'll take it outside and run a lot of water through it to see if that works. I've invested a lot this week in pads and filter. People have been posting about this for years, and there is no solution.

I found a solution I think one week ago. I just filled up the tank filtered water (distiled) and keep running continuously until the water has finished. After this operation the smell has gone.

Have wonderful holidays!

I'm beginning to wonder if the new filter is the problem. Took apart the bottom section (it didn't stink at all), cleaned everything, used a wire to check for clogs, tried to run vinegar water through it. When I turned it on (outside, not taking any chances with stinky) just a little water came out and it still stunk to high heaven.