The same argument could be made for all private businesses.  Many bar and tavern owners made this same argument when all smoking was made illegal in these PRIVATE establishments.  No one was forcing anyone to visit a bar or a tavern where smoking was allowed.  The "hook" was labor laws and employee rights.  If a condition of employment is to be subject to unsafe conditions, it can't happen.  I'm assuming  that these smoking lounges would not be staffed by volunteers.