Respiratory infections
resp
There are different levels of smoker, social smokers (only smoke with other smokers), heavy smokers (pack a day or more), etc.
yes
Yes chain smokers or frequent smokers can be prone to sore throats. The smoke from cigarettes has harmful carcinogens, regular exposure to which can lead to scratchy throat. The only measure for this is to quit smoking in order to manage dry sore throat. Early signs are good and you can get them quickly healed using some cough lozenges or any OTC syrups.
The disease is mainly seen in the legs of affected persons, but may also appear in their arms.
I don't know about heavy. But Georgie Thompson definitely is.
Nicotine is an addictive drug, so technically yes.
You will obtain smokers lung most likely by being a habitual smoker. Sometimes people who are constantly around second hand smoke can get it too. Some jobs that deal with smoke, such as a firefighter are also prone to this.
Someone who smokes marijuana often.
Asthmatic smokers who quit the habit can reverse lung damage that exacerbates their breathing difficulties, regardless of how long and how often they smoked in the past.
Air purifiers are abundant and most offer comparable prices and similar features. A heavy smoker will probably need to clean or change filters more often but the purifier will be up to the job.