I don't have MCS as far as I know (still finding things that contribute to my symptoms) but I read the book above and it helped me understand the difference between being someone who goes for the no nasties approach (I even grow my own organic food) and actually knowing what's in all these products (the familiar brands that we grew up with aren't even the same as they were, especially in fragrance chemistry). We've been acting on trust without thinking.
What I wanted to say is just that we could have a society that allows people with mild MCS to get out and about if we stopped forcing these fragrances (chemicals designed to float about in the air long after applied) on them. There are plenty of reasons why not to use them even if you don't have MCS etc and, unlike most food choices or products around your home, fragrance (even if unscented) is something where you impose your choice on others.
[edited below to reduce OT rant]
I relate to your rant when it comes to food. (Which I know is a lot easier)
I can't tolerate preservatives (all the ites: sulphite, nitrite, etc) to the point where now I have eliminated them I can function as mild or moderate but if I, say, eat something with commerical vinegar or dried coconut or canola oil in it I'll be nauseous and diarrhoea for days and then weak for a month.
I never thought I'd be annoyed at people for food choices but now that I am a lot more sick and it really is serious, I find my patience for people who sometimes get a really little bit bloated for an hour or so or don't have any reaction at all ...
and assume that everyone is like them is less. They're the ones who make me feel like a drama queen because I actually have to insist on what I need or not eat (this makes me cry just thinking about it as I'd rather just never eat than fuss). I can't afford a month of nausea because I want to be polite (been there done that).
I'm very grateful that there are choices though (unlike fragrance).
The hardest part is that, on top of losing your whole life of freedoms, we have to face people in our lives who could support us with understanding but who imagine somehow we're not trying as hard as they are, or they would, to be well. The only thing I can do is to remember that it's not me, it's their own issues. And talk here with people who do have genuine problems and do genuinely understand.
And cry sometimes when I need to.
And then carry on.
Just wanted to say, you're not alone and it's real ...and it's very hard.
Because that's what I need to hear and know too.