A. You're right that you can't use Vaseline, or any petroleum jelly-based product. The reason is that petroleum products are a fire hazard as they are combustible when they are around oxygen.  

To help with dryness, you can add humidity to your oxygen concentrator by using a humidifier bottle (your local branch can get these for you).

Another option is to use a water-based lubricant. There are several different brands and over-the-counter products available on the market, one good example is the Ayr Saline Nasal Gel.

For more information: Prevent Dryness from Oxygen Therapy

A. You should never change your oxygen flow without consulting with your provider, as that oxygen flow rate is your prescribed amount from your physician. 

Them first thing you should do is focus on your breathing when you are up and moving around. This means breathing through your nose and out through your mouth. If that doesn't help with your feelings of breathlessness, you may need to ask your provider about a 6-minute walk test to ensure your current prescription is the correct amount of oxygen for activity.

For more information: Breathing Exercises to Help with Breathlessness

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