Many people use cedar shavings with no problem, including large commercial broiler farms that have considerable economic incentive to avoid any illness. OTOH there *is* pretty good reason to believe that in some situations the volatile oils in cedar shavings can cause problems.
So it is kind of a matter of personal choice. The more very-well-ventilated your coop is, the less of any problem you're likely to have. Adult chickens are probably less iffy with cedar shavings than chicks in a brooder. I personally would not use cedar but enough people do, and have no problems, that I do not think it is reasonable when some folks paint it as an automatic death sentence or something (not saying you did, of course, Kathy, just referring to some other threads on the subject)
Personal decision, I think.
Good luck, have fun,
Pat