Question

what will happen if harmful organisms or substance enter your body ? how do you feel ?

Answer 1

$\huge{\red{Hello mate}}}$

Once inhaled, chemicals are either exhaled or deposited in the respiratory tract.  The eyes are particularly sensitive to chemicals. Even a short exposure can cause severe effects to the eyes or the substance can be absorbed through the eyes and be transported to other parts of the bodycausing harmful effects.

${\pink{I hope it helps you}}}$

Answer 2

if pathogens will enter our body they will cause us a disease and to fight with it and make it go away our immune system fights and a process called immunisation is taken place which make our body weak and uncomfortable untill the pathogen is not killed