Hi Sue,
I am like you - very sensitive to perfumes, aftershaves, smoke, changes in temperature - all the pollens in the air, it's challenging to deal with.
i am wondering if maybe somehow you could bring this topic forward? As Katherine suggested;) If you are in a group setting that is otherwise comfortable and helpful - I am sure that they would make changes for sensitivities? It's like going to appointments at hospitals or almost everywhere now - you have to be cautious about others sensitivities.
i do hope somehow you can stay in the group - it's hard enough to be isolated for so much of the time. I am rooting for you;)
best wishes,
NatR