Thank you for writing.
Most people sweat quite a lot from the underarms, especially when hot but if you are not sweating you may have an underlying condition that is causing this lack of sweat. It could also be due to being dehydrated a lot ,or even due to any medications you take.
If you smell badly under your arms then you're likely sweating. Is this what you mean by spellcheck? Do you mean you sweat excessively? Or not at all? You did not clarify this in the body of the message.