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this may be because of some food additives which are used in preparation of spaghetti. These may include spices,, chillies, jalapenoes and other fragrant foods which may be causing his body to release Histamines from the mast cells which would actually cause the hot and sweaty feeling.
The only permanent thing which may be done is the avoidance of such food material. Please note that this one type of response of the body. The body may react in a different way some other time.
Hope this helped