Hi Kenn,
Sorry, I can't see your pictures. If your posts are hosted from Imageshack, the reason they will not work is addressed in this
announcement (the third post in this thread).
A tutorial for posting pictures to a thread can be found
here.
How large is your axolotl? If the axolotl is an adult, I strongly recommend switching to a more nutritious diet than Krill, tubifex, and mosquito larvae can offer, these articles will help:
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Earthworms, the best diet option for your axolotl.
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Adding variety to the menu.
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Nutritional value of foods accepted by the axolotl.
If the axolotl is not eating the foods you have provided, this could be attributing to the bad 'smell' - as uneaten food becomes rotting food - rotting food becomes a toxic menace (ammonia) which is dangerous to the axolotl's health.
How large is the tank? Does the axolotl have any tankmates (fish, another axolotl, etc)?
Do you have a filter running? If so, what type of filter? Does it need a clean, maybe? If the filter is all gunked up, you can clean the filter media (such as the sponges) in a bucket of the aquarium tank water (using this water will preserve the beneficial bacteria in your tank, please do not use tap water if your water board utilizes chlorine or chloromine as these chemicals will kill the bacteria).
Have you tested the water for Ammonia, Nitrite, Nitrate and pH?
Also, what is the water temperature?