However, the effect of warmer temperatures on flowers could help bolster struggling bee populations, as stronger scents would make plants easier to find and pollinate.

London - The smell of flowers can increase happiness, say researchers. In a University of Vienna study, people were put in three rooms — one of which had a floral scent — and gave written tests.

Those in the floral room used three times as many positive, happiness-related words and indicated that their mood was better.

And it’s not just floral scents that help.

A 2009 study in the US journal Physiology & Behaviour found that people in a dentist’s waiting room were less anxious if it smelled of orange or lavender.

Peppermint is also calming, says Chicago’s Smell & Taste Treatment and Research Foundation. - Daily Mail