Help, guys, please?

My fridge took on a bad smell. It smells like chemicals or like what a bottle of sulfa antibiotics smells like. My husband claims he can’t smell it. I think it’s making all my butter taste like shit.

I cleaned the fridge last weekend and it seemed to go away but now it’s back I’ve put everything in ziplock bags but it still seems to be leeching. WTF? Is this all on me? Is there something else I can do? FTR, I’m pregnant and can smell through walls.