I bite my nails. How can I keep proper hygiene in the kitchen? I'm not a professional chef, but I think someone will have this issue, somewhere, and is a chef. A similar question asked about having a cold, but nail biting is much worse due to the obvious amount of cuts one develops on fingers.

Apart from the obvious (and difficult to achieve) goal of stopping the habit, how can I maintain proper hygiene and food safety while cooking?

I would say gloves, but I think it's going to be a problem for complex manipulations, and it could affect the taste of what is prepared. Is there a special brand specifically for this purpose?  If not, what other precautions can I take?
Gloves are annoying and, much like condoms, do obscure sensation and--in the case of kitchen work--precision with your fingers. For those reasons I avoid them wherever possible.

As a lifelong nailbiter (from when I was about 9 until I was 31), it was a habit that was really hard to give up. But it has been worth it, not just professionally. I know this isn't the answer you're looking for, but: stop biting your nails.