Cold sores don't affect your health. They can be embarassing or case some emotional stress but that is about it. It's your heath that can affect the cold sore virus.
When you're immune system is lowered by stress or illness or if you have been out side in very hot or very cold temperatures for long periods of time, then you could get a cold sore.
Anyone
If some foods lower your immune system, then yes certain foods can cause cold sores. When your immune system is lowered by stress or illness then you can get a cold sore.
Repiratory system
NO, protein can help strengthen the immune system. When the immune system is healthy then you may not get as many cold sores. Common triggers for cold sores are, being out in very hot or cold weather for long periods of time, prolonged sun exposure and lowered immune system due to illness or stress.
If it's lowering your immune system and or causing you some stress, then low hemoglobin can trigger a cold sores to break out.
Cold sores don't do any thing besides cause an ocasional annoying sore or blister on the mouth. You don't have to make a big deal out of a cold sore, they are very common and not life threatening.
Bactroban is not effective for viral cold sores.
Canker sores an cold sores are not the same thing. Oral herpes is caused by a contagious virus. Cold sores can cause a lot of discomfort or pain and they affect the out side of the mouth. Canker sores are caused by bacteria and as far as I know they are not contagious. Canker sores are raise white slightly itchy masses that occuron the inside of the mouth.
Cold sores occur when your immune system is run down or lowered by stress. They can also be triggered by being out in the sun or in cold weather for long periods of time.
You don't get cold sores from the wind.
Cold sores are very contagious.
Cold sores aren't airborne.