I found the sewer smell in my basement !!!!!
After more than 2 years I finally found the source of the sewer smell in my basement and I canÂt believe I didnÂt realize it. I tried filling the floor drains with bleach water, I had the furnace guy cut a hole in the duct work so I could clean out the drip pan for the air conditioner. I opened windows. I threw out the carpet. I was ready to cry it was so frustrating and stinky, until I had a light bulb moment when someone mentioned standing water.
My drain pan in my dehumidifier never drains completely and when I pulled it out to see if it was stagnant OMG what a smell!!!! Now that its cleaned out my house smells wonderful. I hope this helps. I know how frustrating a smell like this can be.