1. Green leafy vegetables

The main ingredients of salads and sandwiches — leafy greens can be polluted by muck, unclean water washes, etc. The bugs that feed on these greens stick to it and are difficult to detect by the human eye. Hence, always wash these with warm water properly before use.
2. Eggs

The salmonella bacteria loves to reside in eggs. It can cause food poisoning or even typhoid if the eggs are not properly cooked.
3. Meat

Raw meat has high affinities of containing germs that your immune system can’t always fight away. Hence, undercooked meat should be a strict no-no.