The first thing a lot of people do when they sit in a new car is take a deep breath in and say “I love that new car smell!”
 
"New car smell" is so popular, that Air Freshener companies have tried to bottle it, but just can't seem to imitate the scent. 
 
The new car smell emanates from a combination of factory fresh plastic, vinyl, leather, carpet, upholstery and glues which form the brand new interior of the car.  The smell may be stronger in some cars than others.

Most people enjoy the waft of their new cars however, people with allergies may have reactions including headaches or even skin rashes, depending on the sensitivity to the “off gassing” process in the first couple of months.

It's a good idea to ventilate your new car by opening windows while you drive, particularly on hot days, until your first service to avoid any discomfort.  Most of the off-gassing would have occurred by then.

Off gassing is the release of gas into the air from products treated with chemicals during their manufacture.
Another tip is to park your new car in the sun with the windows slightly open to speed up the off-gassing  process a little.

New furniture and newly built houses also have an off-gassing period which may leave some owners feeling a little light headed.  Again ventilation is important, opening windows and doors to allow the gases to escape will have you enjoying your new possessions in no time.

Most car manufacturers are making changes to manufacturing including using more natural materials and resins to minimise the effect of “new car smell”.