I'm writing this with total incredulity.
A week or so ago I got invited to a friend-of-a-friend's house. The lady in question is clearly a Mrs Hinch type, but each to their own. I did notice wallpaper being unsealed around the cooker/sink area and POLITELY inquired about it. My DD was prem, with heavy lung issues, and one of the things nurses warned me about was wallpaper in the kitchen as a potential fungus/mould and toxin source. I didn't point this out, of course, just gently enquired if she plans to seal it.
She got a bit weird with me, apparently she wipes down her walls regularly, and don't I? Erm, that would make it worse with wallpaper, but I just smiled and nodded.
Now our mutual friend pointed out the absolute barrage of slander on SM. Apparently I was rude (wasn't, just lightly enquired about a sealant?) and "minging" for not cleaning my home properly (my home is kept clean to a post-NICU standard, IYKYK).
Safe to say, that person will be avoided at any cost in the future, but was I unreasonable?