The best advice i could tell you would to go buy a Therma-cell. Like LA Swamper says I don't think it is scentfree, but it's damn close. You can smell a butane kinda smell when it's on. I've never had a deer smell it tho. Another thing I use is some bug spray called Maxi-Deet. It has low odor too. I've had deer all around me after spraying it on.