The photic sneeze reflex (also known as photoptarmosis, colloquially known as "sun sneezing") is a condition of uncontrollable sneezing in response to numerous stimuli, such as looking at bright lights or periocular(surrounding the eyeball) injection. The condition affects 18--35% of the population, but its exact mechanism of action is not well understood.
Yes! "Achoo" is an onomatopoeia because it is used to describe the sound it resembles (in this case, "achoo" is the word used to describe the sound of someone sneezing).
An Achoo choo! Train
Because some people think the sound made whilst sneezing is achoo.
achoo as in your sneezing
achoo
Harry and His Bucket Full of Dinosaurs - 2005 Achoo is rated/received certificates of: Australia:G
not all people do..
*achoo* bless me
Bless you
achoo abjkdsdl havd mak bogo
Dennis Perry has written: 'Achoo!'
robert the bruce was an achoo numptyy!