you really, really need to get the bottom of your odor before you do surgery. i had a surgical removal of my apocrine gland in my armpits. i still smell.
liposuction of armpits is more for excessive sweating than odor. it's more for removing eccrine gland. though it does help with the odor by removing "some" apocrine glands. dont be surprised if it didnt work.
the source of your smell maybe a combination of things like diet, apocrine gland, metabolism issues, etc..