Aveline
Good suggestion but not sure I've got the nerve to actually do it. The person might never speak to me again and I'd hate that. I'll keep thinking.
I'd mention it framed as " You and I trust each other completely so I know if I ever had this problem , you'd tell me right away ".
Some odours (that aren't leaks) are linked to serious health issues that need to be investigated. It's a surprising list.
iere.org/what-diseases-can-be-detected-by-smell/#google_vignette

