Personally, what I do on level 95 is I go through the teleporter immediately, and work on killing the lemons as fast as possible, jumping up alongside a vertical wall as Coldfrog suggested to speed it up. Whenever a bombino is nearby, I throw a blue bomb towards it and if possible, kill it. The reason for this is, the lemons won't move themselves into an easier position to kill, but the bombinos will eventually. This strategy uses time in the most efficient way - killing the lemons as soon as possible and taking advantage of when it is convenient to kill a bombino.
It may be easier to wait at the top for the bombinos to come to you and kill them there though. Or perhaps only wait for bombinos if they are near the top. Either way, don't take too long up there - waiting a long time for 1 enemy is is using the time before the fireball comes in a very inefficient way.
One thing for sure - if you are at the top of the level and a bombino is there with you, kill it before using the teleporter again (at either side of the top if you have blue bombs).
Under no circumstances should you use a white bomb on a bombino anywhere other than the top of the level, the explosion is very likely to kill you. I personally almost never change back to white bombs after the intial change to blue bombs.
This next hint applies on any level. Survival is the priority, even if it requires going into a place that in inconvenient to get back from.
Finally, if you are almost done/done with the level, but the fireball is there, it can be very hard to escape alive. I found that doing so requires attracting the fireball to the top right of the level if it has been on the screen for a while, and even then it was very close.