Your husband is suffering from lightheaded after quieting smoking. Smokers are addicted to nicotine
, so when a smoker quieted smoking there was withdrawal symptoms
like headache, drowsiness
, feeling of boredom, constipation
etc. Also, after quieting smoking there is decrease in carboxyhemoglobin in blood and left shift of oxyhemoglobin curve, which also causes the symptoms. But, it is mandatory for your husband to quiet smoking as he already develops emphysema
and if he continues smoking then the disease will progress further. The withdrawal symptoms will go away after 10-14 days of quieting smoking. So, please tell your husband to quiet smoking.