So, I am SEVERELY allergic to things that are scented, i.e. perfumes and colognes, to the point that I have to carry an Epi-pen because of anaphylactic reactions. Most of my family is aware of this but I know that there are going to be friends and other family members coming who don't. How do I ask them to refrain from wearing anything scented like that in the invitations? If they do wear something scented I won't be able to hug them because it will linger on my dress and cause at the bare minimum a severe head and stomach ache.