No, not true. Actually, swallowing it could actually make you feel worse by upsetting your stomach.
Cold myth ? Is it true that when you suck up a mucous " yuckie " , its better for your immune system to swallow it rather than spit it out?
This is what if collects in your lungs becomes Pneumonia so best get rid of it in any way you can but do NOT swallow it
Common sense your body wants to get it out so spit it I.to a napkin
Just swollow it. You digestive juices will make short shrift of it.