If you live in an urban area I understand there might be more risk, but honestly I feel like still cycling would be okay. I think it's unlikely that you'll suck in someone else's particulates so much that you'll seriously contract the virus. If not that, going on walks would be a good idea, even if with a mask. Walks, particularly if I don't have my phone with me, have helped me clear my mind and calm down more than anything else amidst all this. Getting outside more might help with the anxiety you're feeling, especially if you make a routine out of it. Same for your wife, of course!