The safest level of exposure to secondhand smoke is 'never', as even the smallest exposure can have negative health effects. Regular exposure, such as often or monthly, poses significant health risks. Therefore, avoiding secondhand smoke completely is crucial for maintaining health. ;
The safest level of exposure to secondhand smoke is 'never', as it completely eliminates the risk of harmful health effects. Regular exposure, even on a rare or monthly basis, can pose significant health threats. It's essential to avoid secondhand smoke altogether to protect health.
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