Modern medicine considers the tobacco smoking to be the chronic poisoning that has the mass character. The experience of many years shows that sanitary-and-educational measures explaining the injurious effect of tobacco smoking in some cases give no positive results. Convincing pedagogical influence together with experimental investigations make the struggle against smoking more effective. Use of the portable personal device "Manual on medicine" reveals the mechanism of protective action of filtering materials and demonstrates the clinical picture of acute intoxication caused by toxic gases of tobacco smoke.