There are two solutions to this problem. Both involve the parties to the problem doing something themselves, instead of suing.
A would be for the complaining non-smokers to move to housing that doesn't share structural elements with other housing. It's a lot harder for your neighbor to blow smoke into your house if it's 15 feet away from his.
B would be for the smokers either to quit smoking, or to move to stand-alone housing.
I don't advocate either, although as soon as Xena's Guy and I build our house we are never sharing walls with anyone again. (Nothing personal - I like our neighbors just fine - but a house is a house and an apartment is an apartment, and a townhouse/condo is too much the latter to be considered the former.)
There are two solutions to this problem. Both involve the parties to the problem doing something themselves, instead of suing.
A would be for the complaining non-smokers to move to housing that doesn't share structural elements with other housing. It's a lot harder for your neighbor to blow smoke into your house if it's 15 feet away from his.
B would be for the smokers either to quit smoking, or to move to stand-alone housing.
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A variation on "A" & "B". -- Seeing the condo Association changed the rules, they should be liable for buying out either party and restoring the peace. The association could then re-sell to new owners who accepted the new rules.