One is prone to use this example of inflation (3,3)
I believe the answer is:
air bed
'prone to use this example of inflation' is the definition.
The definition suggests a singular noun which matches the answer.
'one is' is the wordplay.
I cannot really understand how this works, but
'one' could be 'i' (Roman numeral) and 'i' is present in the answer.
'is' could be 'be' and 'be' is located in the answer.
The remaining letters 'ard' is a valid word which might be clued in a way I don't see.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for air bed that I've seen before include "place to sleep" , "Inflatable mattress" .)