Toothpaste Packaging

Recently, I opened a new tube of toothpaste and content flowed as if I pressed the tube. The next day, I opened a yogurt and a bit of content "burp" because the cut was now under pressure. I also notice that my ears are popping a lot lately. My feeling changes in air pressure, but never to this point. I do not think it's a case of packaged products sold to the altitude and at sea level - the same products I've used before and never had this case.

It must be the ghost of dairy products. Beware of ghosts milk.

Toothpaste? Bah, who cares.

It might be the change of pressure where you live, but we can not speculate, you begin to experiment. Get a barometer, or ask about the pressures typical in normal days and days of this phenomenon. Then we'll see what all this.

If the contents tend to come out, it means that the pressure inside the package is greater than the outside. This could give you a head start. Maybe you can also measure the pressure inside these packets. What say you?

Help i cannot but I

The short answer is yes.

In the planes of the internal pressure is set at approximately 6000 to 8000 feet and if you take the chance of note, many packages to give you (cookies, etc.) appear to be under pressure as they were filled, there, somewhere near sea level

Not only does your toothpaste and yogurt.
As this is a change in altitude, there is also a change in pressure. It is also the reason why you / we live (sometimes) hearing on such poor elevations.

Yes.