Shortly after quitting, a smoker will typically regain their sense of smell and taste. This improvement can occur within just a few days to weeks after stopping smoking, as the body's senses begin to recover from the effects of nicotine and other substances found in cigarettes.
While some individuals might experience shortness of breath or changes in circulation as their body begins to heal, these are generally more related to the overall recovery process rather than immediate changes. However, shortness of breath can also be related to withdrawal symptoms or the initial effects of stopping smoking. Rapid heart rates can occur as the body adjusts to the absence of nicotine, but regaining sensory function is a commonly noted benefit soon after quitting.