HI
Well, if you put it like that, then yes expect then to get annoyed! :
Just explain to them that it would be more cost effective to replace with Lino and this would be easier to clean and won't be full of dirt, and other bodily functions, and if they want that pklush feeling they can put down a rug.
If you do not want to go this way, spray all over with Sta kill or a powerful carpet deodourizer and do that once a month or so.
I inform my clients what's maybe the better option but at the end it is their choice.
Regards
Martin