Ibn Omar (may Allah be pleased with him) said:
"The Prophet (peace and blessings of Allah be upon him) said:
"If a servant lies, then the angel departs a mile away from the bad smell of he it."
Termizi narrated it.
How terrible is that? The angels assigned to guard the slaves in this world also run away from bad smell of their lies. Who is the man who his angel fled from him? It is not random that the people say somebody has no angel. Therefore, we should not lie anytime.