<s>[INST] Can I really get asthma symptoms from a plastic Christmas tree? [/INST] Yes, you could if you had asthma symptoms from real Christmas trees in the past (though this is not a common allergy)! This phenomenon is called a conditioned reflex the same thing that causes your mouth to water when you see a picture of delicious food. Source: Ginasthma. Link: https://ginasthma.org/about-us/faqs/. Field: Lung Disease. Disease: Asthma </s>