A science-fiction portal has been set up between Earth and the Moon. It uses a fold in space, so travel through the portal is effectively instantaneous. Initially there is an airlock to prevent Earth's atmosphere rushing through. Explorers and colonists move back and forth through the airlock.
Now comes the time for superfast terraforming. The plan is to open the portal completely, thus allowing Earth's atmosphere to rush through and provide an atmosphere for the Moon. Another portal from the Ocean gives a similar effect to provide huge crater lakes on the Moon.
Suppose we wait until the air pressure equalises and an airlock is no longer needed. Will the change in Earth's atmosphere be noticeable for the average person sufficiently to change daily life?
I have tagged both science and science-fiction. This is deliberate. The SciFi relates to the portal. The science relates to the real-life effects of such a portal were it possible.
Assume that the Moon will retain its new atmosphere for thousands of years at least. There are calculations that suggest this is possible but I want to assume it for now.
The portal opens directly onto the Moon's surface, not into domes.
The portals are 10 meters in diameter.
Please ask for clarifications before answering.