Question

superstitiously we believe that hiccups come when some one is missing you a lot but what is the superstition behind...1) sneeze..2)cough..3) blinking of left eye..4)blinking of right eye..and more..i want a meaningful and a long answer fast please

Answer 1

sneezing-the origin is that your soul would escape your body
cough-meant the unexpected entry of a devil into a person who had been telling lies or carrying out misdemeanors of some kind.
blinking of left eye-if the left eye twitches something bad will happen. 
blinking of right eye- if the right eye twitches, something good will happen

Answer 2

1 sneez comes when some foreign particul of dust gos in our nose there are some resepters in our nose when that dust touches our resepters they tell our brain that there is some dangerous thing in nose then our diafram pushes air from our lungs this air has speed of 165 miles per second
2 when the mucus in our throat increases our body triesto remove it with same process as in sneez but slow
3 and 4 this can happen when our eye works to much without any blinking like when we see to mobile. screen to much