The cough reflex is one of the body’s best “defense mechanisms”, irritation or obstruction in the breathing tubes triggers this reflex, and the violent rush of air helps clear material from the breathing tubes.
shaky
selective
secretive
secret
separate
shaggy
shiny
serious
sharp
shivering
shallow
selfish
short
shocking
shut
seemly
sedate
shrill
sincere
simple
simplistic
silent
skinny
skillful
slim
slippery
slow
small
sleepy
smoggy
smart
smelly
smiling
silky
silly
silent
sick
slimy
sloppy
sneaky
smooth
somber
sordid
soft
sore
snobbish
sparkling
sophisticated
snotty
sore
soggy
spiky
solid
spectacular
special
spiffy
spicy
spiritual
sour
spurious
stale
spiteful
splendid
squealing
staking
square
spotty
squalid
spotless
squeamish
spotted
spooky
standing
steadfast
steady
statuesque
stimulating
striped
strange
stormy
stereotyped
steep
sticky
stiff
straight
stingy
strong
opposite
stupid
stupendous
sturdy
subdued
substantial
succinct
successful
subsequent
supreme
symptomatic
sweltering
synonymous
superficial
swift
sweet
swanky
sulky
super
sudden
tense
temporary
teeny
thin
awful
axiomatic
average
aspiring
ashamed
aware
aquatic
ancient
amuck
animated
angry
amused
ambitious
annoyed
anxious
apathetic
alive
alert
alcoholic
alluring
aloof
alleged
ahead
alike
ajar
bawdy
beautiful
barbarous
belligerent
bashful
berserk
bloody
boorish
scrawny
scintillating
scattered
screeching
scarce
scientific
scary
second
royal
romantic
roasted
round
rough
rotten
right
rhetorical
rightful
responsible
resolute
righteous
savory