do cigarettes contain carbon dioxide Chemicals in Cigarettes: From Plant to Product to Puff What Happens to Your Body,

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If you want to know for sure if the haze you are finding is related to smoking, there are air-quality detection companies and devices that can confirm the presence of smoke residue from cigarettes

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Vets regularly see the shocking impact of passive smoking on pets, from worsening existing respiratory problems like asthma through to more serious conditions such as certain cancers like lymphoma, which is twice as likely in cats if they are exposed to cigarette smoke. Passive smoking in pooches is linked to breathing problems, difficult-to-treat nasal and sinus cancers in longer-nosed breeds and lung cancer in other breeds