Products containing asphalt are some of the most common things that can create an unpleasant scent that can result in headaches and even dizziness. It might be worth avoiding any products that list asphalt as an ingredient if you are prone to substance-related reactions. It might also be worth considering that some rubber-based products have a rubbery scent upon initial application. This might be off-putting for some people, and it is definitely something to be aware of.