Dairy With Chest Infection Is It Possible To Become Lactose Intolerant Later In Life?

Is it possible to become lactose intolerant later in life? - dairy with chest infection

I always had milk and other dairy products all my life. I am now 19 and in the last three days I had a lot of gas. I am sure that (their milk, but I do not know if something else caused the gas is mainly meat, I ate a lot last week in the last two weeks -) ends I can not imagine "what is the origin of this gas in the abdomen and chest. Milk has never been realized.