I had two incidents that happened on the same day 1.While opening the door knob of my office rest room, Some yellowish fluid touched my hand from the door knob. I didn't know what the fluid was.I washed the hand with hand wash immediately. 2.I'm travelling to the public transport and I kept my elbow in the bus window. I noticed some dried fluid on the window I'm not aware of while keeping the elbow and it touched my elbow. From the first incident 5-6  hours later from above incidents I used the same hand to eat the food. I don't have any cut/open in my hand. Any HIV risk from above incidents?