There is no doubt that smoking is injurious to health. While one can argue that, it is someone's choice to smoke, I completely agree that people should be careful who are they smoking in front of, and it should be prohibited in public areas.
Firstly, if there are children present in common areas such as parks and malls, smoking can do damage. This is because their lungs and brain are in the developing stage, and should not come in contact with any pollutant. In addition, It is possible a kid might pick up the habit after watching someone do it. For instance, if a child's parents smoke, they are at a greater risk of becoming smokers later in life. The possible solution to this would be, to ban it in all public spots, especially when kids are present.
Secondly, people get influenced easily by any bad habit. If we see anyone of status and power performing it, we are more likely to repeat it. For example, usually young individuals start smoking in their teenage, due to the fact that, they saw one of their friends do it. Furthermore, one more factor is, peer pressure in the office environment. If you saw your boos smoking, you feel the social pressure and start doing the same to impress them. Adults should realise that, they might be a role model to someone, and it is their responsibility to behave appropriately.
To conclude, smoking kills more people than air pollution, or any other type of pollution. Unless strict rules are made with regards to public smoking, this problem will only escalate. I feel, it should be a combined effort of individuals and governments, to take responsibility, and educate children about this in order to spread awareness. 
There is no doubt that  
smoking
 is injurious to health. While one can argue that, it is someone's choice to smoke, I completely  
agree
 that  
people
 should be careful who are they  
smoking
 in front of, and it should  
be prohibited
 in public areas. 
Firstly
, if there are children present in common areas such as parks and malls,  
smoking
 can do damage. This is  
because
 their lungs and brain are in the developing stage, and should not  
come
 in contact with any pollutant.  
In addition
, It is possible a kid might pick up the habit after watching someone  
do
 it.  
For instance
, if a child's parents smoke, they are at a greater  
risk
 of becoming smokers later in life. The possible solution to this would be, to ban it in all public spots,  
especially
 when kids are present. 
Secondly
,  
people
  get
 influenced  
easily
 by any  
bad
 habit. If we  
see
 anyone of status and power performing it, we are more likely to repeat it.  
For example
,  
usually
 young individuals  
start
  smoking
 in their teenage, due to the fact that, they  
saw
 one of their friends do it.  
Furthermore
, one more factor is, peer pressure in the office environment. If you  
saw
 your boos  
smoking
, you feel the social pressure and  
start
 doing the same to impress them. Adults should  
realise
 that, they might be a role model to someone, and it is their responsibility to behave  
appropriately
. 
To conclude
,  
smoking
 kills more  
people
 than air pollution, or any other type of pollution. Unless strict  
rules
  are made
  with regards to
 public  
smoking
, this problem will  
only
 escalate. I feel, it should be a combined effort of individuals and  
governments
, to take responsibility, and educate children about this in order to spread awareness.