Think before you stink!: That’s basically the message behind this compellling travel tip from San Franscisco Chronicle travel editor Spud Hilton. If you’re going to be traveling in close quarters – in a plane or a train or bus with others you don’t know – please limit your use of fragrance and cologne. For those who are chemically sensitive or have asthma encountering your toxic cloud (yes, fragrances have toxic ingredients) could send them into spasms or create a physical reaction that has them in bed for days. Trust me, your sensitive fellow travelers will thank you for skipping the perfume that day!