I have asthma and I have had several little People with breathing difficulties. I have used Vicks several times but the one time it caused trouble it was big time trouble and I was very angry with myself for a long time. What we use instead is eucalyptus oil and camphor in a crock pot full of water, in the kitchen, with the lid off. Vicks and Walmart already put these in a bottle for you to use in those same vaporizers but in slowly steaming them in the kitchen no one gets a big dose and I have never noticed so much as an extra sniffle from them or me. Eucalyptus is a natural bronchialator and I can tell you when I come in from being gone even an hour I can feel my chest open up on those bad days. No increase in nasal or sinus secretions, just blessed air. The extra secretions that Vicks up close or too strongly are what caused that trouble and I believe what Sukie is warning us about. (And yes I will appreciate it when she corrects me if I got it wrong. :) It's helpful for all kinds of breathing issues. I recently used it for my 88 year old Uncle who has congestive heart failure. He fixes it for himself now. But as always . . . check with your vet. Brenda, Momma to the FurpeopleWeyr FurpeopleWeyr.com -- [Posted in FML 7665]