No: A "cold" is an infection by certain viruses that cause "cold symptoms". Air conditioners, heaters, humidifiers, cold air, warm air, cold rooms, etc... Do not cause colds. However, quick changes in air temperature and air quality can lead to sniffles, sneezing, coughing, and a runny nose, but usually only briefly... And so may fool a person into thinking the air changes are causing a cold.
Answered 9/5/2016
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