Asthma, age 68, isolating, but husband must return to work.

So (as they say) first question are you in the high risk shielded group ?

It doesn't sound the wisest of things especially with you being asthmatic. Unfortunately, being young and fit is no guarantee either against this virus.
Unless there's a financial need I would say no to returning to work before it's safe to do so.

Suziewoozie no Ive not been identified as part of a “high risk shielded group”. I have asthma, high blood pressure (controlled with meds) and a little heart problem. I’m quite fit usually.
I’m just taking no chances.

What does eventually mean? Going back to work in 2 weeks? A month? 2 months?

The advice I've read for people in this situation is for him to put all his clothes in the wash and shower before coming near you.

Same as above he needs to shower and change clothes as soon as he comes in and before greeting you. Also if possible (and I don’t know what his job is as you didn’t say?) he should try to avoid sitting near other people at the office, refrain from hand shakes (obviously) and maybe take anti vac (if he has any) to wipe things down

And sleep in a separate bed/room!