Vicks does not have any effect on the fast, because it has no substance.

Blood tests do not invalidate the fast, rather they are forgiven because they are something that is necessary and they are not like the things that are known in Shari`ah to invalidate the fast.

The blood that comes out from between the teeth does not invalidate the fast, whether it comes out by itself or because of another person hitting him.

Sleep does not invalidate fasting, but for a fasting person to spend most of the day asleep is a kind of negligence on his part, especially since the month of Ramadan is a special time and the Muslim should strive to benefit from it by reading Quran a great deal, seeking provision and acquiring knowledge.

If a fasting person swallows his saliva, that does not invalidate his fast even if there is a lot of it.

There is no sin on the one who drinks or eats during the day in Ramadan by mistake and his fast is still valid.