Um, the receptionist? Hardly an authoritative source. They may become superficially knowledgeable after working in a medical office for some time but they aren’t doctors either.
Recent studies have debunked the secondhand smoke theory via empirical studies.
My own view is that considering most fire victims die of smoke inhalation so involuntarily inhaling smoke is hardly a healthy practice but the medical community is largely undecided on the statistical conclusions and, as usual, a political agenda is the main driver of opinion.