Chlor Smell , does it matter ?

If they did not clean the plants/soil or anything in the tent with the chemical it should be fine. Some plants have a cleaning agent smell to them. We don't call it Chlor where I am from but Ajax. Lots of different names for the same style of cleaners on many different brands. and some people like their weed to smell like this. It reminds them of the weed they grew up on. I am not a massive fan, but some weed does smell a lot like generalized cleaners. As long as the plants are looking good, nothing to worry about.