I carry a pocket knife, plastic handle, drab. It was issued by the Federal Armed forces as gift for the conscripts; got mine about 15 years ago. I keep it sharp with a small pocket diamond whetstone which I also carry with me everytime.

For my kitchen I use Japanese knives (wood handles), honing them regularly with oil. Small work, with lots of music, and wonderful success.

No problems with wood in the kitchen; a good cleaning after use works wonders. And I think a main problem with instabile health today is that people relay too much on hygiene. I have seen a lot of dirt and dust in the field (scouts and army) and am still going strong.