| 摘要 |
<p>A cigarette comprising a tobacco rod and means for introducing a flow of ambient diluting air into the smoke stream passing to the smoker after a predetermined length of the tobacco rod has been smoked, said means including a flow path for ambient diluting air which is sealed by a low melting point material and control means for utilising the heat from the glowing tip of the cigarette when it reaches a predetermined point in the length of the the tobacco rod to melt said low melting point material to introduce or increase a flow of diluting ambient air into the smoke stream downstream of the glowing tip. <IMAGE></p> |
