patricej

partnered swaps are different in a few ways to "general" swaps.
hosts of partnered swaps are still not allowed to exclude people just because the have pets, wear perfume, smoke or have/do something that somebody, somewhere might not like.
but, since the host will be trying to make suitable matches otherwise, consideration of special needs is not inappropriate.

if it is not a partnered swap, be prepared to take what you get.
and make sure to bend over backward to make sure what you send is clean and odor free.

that's what washing machines are for.