What do I do about my neighbor? I can't stand the smell!

There is absolutely no reason that they have to use manure that often. If they want to use manure that often they should use a manure that's odorless. Yes I would complain to my manager because you pay rent to live in peace. Your neighbors need to respect the other tenants.

Do what you suggested. You are paying your rent so your landlord is obliged to sort out such problems with you. So approach your landlord and ask him to suggest diplomatically to your number for some smell-free fertilizers to be used instead. I assume there is such an alternative...

It is hard to have a dispute on your neighbor. But I guess you should talk to your landlord. Let him/her talk to your neighbor. You said that you are new and I don't think your neighbor will listen to you because after all you are a newbie in their place. But try to explain to your landlord that you don't disagree with natural gardening that you have a bit problem with the smell and that's all. Try to explain that it is not personal really just the smell. If I were in your shoes, I would really have a hard time solving this issue.

Some people just use such a small part of their brains. Now, they smell the same thing that you do and simply have no regard for fact that everyone does not want to smell this -- not repeatedly. So what happened? Did you tell them?

Nothing needs fertilized that often, especially with manure. They are lowering the pH of the soil by applying manure that often. When it decomposes, it takes nitrogen (that the plants need) from the soil in order to decay. I've seen lots of people kill plants because they pile grass clippings on them weekly (grass will also suck nitrogen from the soil.) I'm surprised their plants are healthy. But, when you live that close to other people, they are going to be a nuisance, and so are you. There are lots of ways to pollute the air--noise included. What they are doing may not seem as bad to them as the things some of the other neighbors are doing--having loud parties, letting their dogs poop wherever they want, taking their trash out 3 days early and not cleaning up the mess after the raccoons get into it...You could complain, but it might make your situation more uncomfortable. I didn't know such a thing as odorless manure existed, but if it does, do some research. Find out if they sell it in your area and find out how much it costs. Give your neighbors this info. It's worth a shot.

go at it slowly, introduce yourself, explain that you also have an interest in gardening and enquire as to what he uses to fertilize his garden. maybe suggest something a little less pungant like sheep dung or possibly bat guana of course you wouldnt mention the pungant odor that permeates your sensory organs each time he fertilises his allissas, no thats being too blunt

Hmm. Maybe try talking to them to see if there is any alternative?