u/Both-Novel1296

So I'm not sure if this is the right place to post this as I'd consider myself to be fairly new to reddit still but I'm having this weird problem where random items in my house smell strongly as if I had them sitting outside next to a fire for hours soaking in all the smoke. It happens in different parts of the house with different items. Today I found that my baby's pacifier holder smells strongly of smoke. A few days ago it was a t shirt and a bib. We have not had any fires nor have the neighbors and you can't smell it in any part of the house, only on these random items. Does anyone have any idea what it could be? Thank you

  I wanted to add that this has only ever happened in this house. We've lived here for just about a year now.