Since the ingredients may not tell you that there is a fragrance in a product, you might be tempted to use the “sniff test.” But there are 2 problems with opening a product in the store and smelling it.
First, there are a lot of competing smells in your average store. You may not detect a fragrance specifically coming from a cleaning product in the store. This is especially true if the store has chosen to “freshen the air.”
Second, there could be a masking fragrance in there. If you have severe reactions to fragrances, or are concerned for the environment, then these are still a problem.
The best solution is to seek out companies and products that spcifically state they have no added fragrances.