Eating papaya and shrimp at the same time will have adverse effects on health, and eating together will lead to abdominal pain and dizziness. Because shrimp contains arsenic (arsenic that is harmless to human body), vitamin C in papaya will be converted into toxic arsenic, so it is necessary to avoid eating shrimp with foods rich in vitamin C.
Although papaya and pumpkin are both melon foods, they can't be eaten at the same time, because pumpkin contains enzymes that decompose vitamin C, and papaya contains very high vitamin C, which is 48 times that of apple.
Extended data:
The decomposition enzyme of pumpkin just destroys vitamin C in papaya. Eating papaya is equivalent to not eating it. If the nutrition is not absorbed, it will be wasted and you can't eat it together. However, when the pumpkin is cooked, the vitamin decomposing enzyme is destroyed. So if you drink pumpkin porridge and the like, papaya nutrition will not be lost. It doesn't matter as long as the pumpkin is ripe.
References:
What can't papaya eat with? What can papaya eat with?