Great question! Our product has zero VOCs (or volatile organic compounds), so there is virtually no odor. You’ll notice that we don’t use respirators while applying our epoxy. Generally, there is no need, but please be aware that each individual is different and some have allergies or respiratory issues that may require them to take extra precautions. We do recommend that you create a well-ventilated space. We can provide the SDS information for any of our products at your request and you can share these with your physician if you are concerned.