Short answer: probably not, and almost certainly not by accident. Longer answer: it depends on whether his contract has a moonlighting clause, whether anyone at his work knows your face, and whether you have done anything to link the two.
What an employer can actually see
Platforms do not publish your legal name on a profile. Your real name sits with the payment processor and the tax authority, not on the storefront. A colleague browsing FeetFinder cannot search by surname.
What they could find, if they went looking hard: your display name, your photos, and anything cross-posted from a personal account.
Where it goes wrong
- Photos reused from a personal Instagram, so a reverse image search lands on you
- A handle built from a real first name plus a surname or birth year
- Someone at his work follows you and recognises the kitchen
Does his contract matter?
Only if he has a strict exclusivity or conflict clause — common in finance, some public sector roles and anything security-cleared. Those clauses are about competing employment, not about his wife's side income. In practice a spouse selling feet pictures is almost never declarable.
If he does need to declare it, "spouse's self-employed online retail" causes the least fuss. Nobody in HR asks for a link.
If you are found out
Nothing happens. That surprises people most. No formal consequence, no HR meeting, and the usual reaction is "oh, her off the internet".
Before you start
- Separate email, separate bank, no reused photos
- Handle with no real name in it
- Decide together whether he knows, and keep it that way
- If his role is sensitive, read the outside-interests clause once