A 2004 U.S. telephone survey found: "17.6% experienced breathing difficulties and other health problems when exposed to air fresheners."

A 2004 U.S. telephone survey found: "31.1% of those sampled reported adverse reactions to fragranced products."

According to a 2004 telephone survey: "11.2% of Americans reported an unusual hypersensitivity to common chemical products such as perfume,…