Is that true

sakshi jain (student) (212 Points)

30 April 2013  

just tell me when i go out of my home,i notice pollution (petrol,diesel,cng) comes out of the vehicles and emitted into air and when we breathe it enters into our body...then why dont it make us ill frequently and why dont we die as pollution and dust are harmful for us...why do we plant trees?....should we avoid dust and pollution as much as we can?...if i dont go out of my home for 7 days and take air of fan and air conditioner,will i die?is fresh air necessary?

Another thing,if i am speaking to anyone or thinking and suddenly mosquito enters into my mouth and suddenly by mistaken i swallow what will happen?as mosquito also has blood ...what will if that mosquito has any other type of blood group,reacts with my blood...will i die?