smell and air

[Unregistered]

Which one is correct?

I am talking to air
I am talking to the air

I smell peach
I smell peaches
I smell a peach

What's the difference? air or smell is uncountable right so there should be a the or an a?

 

[Anglika]

Which one is correct?

I am talking to air
I am talking to the air

I smell peach
I smell peaches
I smell a peach

What's the difference? air or smell is uncountable right so there should be a the or an a?

Somewhat difficult to answer since there is no context for the sentences. "I am talking to the air" is understandable as "no-one is listening to me".

As to your other sentences, they all are correct with different meanings:

I smell peach = I sense an aroma which is that of the fruit.
I smell peaches = I smell the aroma of several peaches
I smell a peach = I smell the aroma of one peach.