is a major health hazard and is named as "second hand smoking".It holds equal health hazard as "active smoking" such as cancers of the lung, stomach, urinary bladder
,breast cancer etc. It also leads to respiratory infections and in females has effects on the developing fetus in form of intrauterine growth retardation
, premature birth and low birth weight
.Smoking also a major risk factor for cardio-vascular diseases.
So do convince your mother to quit smoking.Explain and counsel her about ill-effects of smoking
. These days plenty of nicotine gums and medications (Bupripion). She can also consult tobacco cessation consultant who can assist her quit smoking under guidance.