A scrim will appear entirely opaque if everything behind it is unlit and the scrim itself is grazed by light from the sides or from above. A scrim will appear nearly transparent if a scene behind it is lit, but there is no light on the scrim. A dreamy or foggy look can be achieved by lighting a scene entirely behind a scrim.
Food or small objects can cause choking if they get caught in your throat and block your airway. This keeps oxygen from getting to your lungs and brain. If your brain goes without oxygen for more than four minutes, you could have brain damage or die. Read more on MedlinePlus.gov.
Complications of choking, which often develop quickly (in as few as 4 minutes) and may cause death, include the following: 1  Brain damage (caused by reduced blood flow to the brain resulting in a lack of oxygen). 2  Collapsed lung (may occur when air flow through one of the bronchi is completely obstructed).