Yet another reason to finally sell that '84 Camaro

Do you keep a little tree hanging from your rearview mirror so your car won't smell? Well, it turns out those seemingly benign (save for the awful, pine scent, that is) air fresheners may contain chemicals that affect hormones and reproductive health.

Twelve out of fourteen brands of car air fresheners tested during a recent study (and reported by the Natural Resource Defense Council) were found to contain chemicals that have been linked to reduced levels of testosterone and poor semen quality.

While being around these chemicals (known as phthalates), which are also found in many cosmetics and household cleaning products, won't have an instant effect, daily exposure may eventually take its toll.

Looks like it may be time to finally get rid of that Little Tree air freshener. Besides, those things are so '80s.