Why didn't my honda pass the emmission test?

My 95 Honda accord didn't pass the emissions part of a smog

Did you not ask the person doing the inspection what went wrong? You might want to start there.

Go ask the Deli-clerk at Safeway.

What did it fail on? Your question is too vague.

Because the exhaust fumes has to high levels of carbon monoxide and or nitrous oxide (nox).
Read the emissions report why it failed.
It may have a check engine light error due to bad timing which can cause an abnormal exhaust.