Fungus or sunburned
 

What do you think is this ? Fungus or sun or cold burn? It is a baby, the rest of the plant looks good

I would tip on none of those and say transport stress.

New plant? lowest smallest leaf?

Probably nothing to worry about

but to be safe if it is new maybe spray it for Insects. Since I have been caught out recently and I find that some nursies tends to have thrips on their orchids it can't hurt

Thank you...i think it is trasport issues..burn from the weather or the carbon warmer they use