I don't know a single word that would replace "a group of noisy people". There's a whole bunch of adjectives that could describe that group of people - amongst synonyms of noisy
(bolding ones that would match the situations best),:
chattering, disorderly, ear-popping, ear-splitting, loudmouth, rackety, raising Cain, raising the roof, rambunctious, riotous, rowdy, screaming, tumultous/tumultuous, turned up, uproarious
and quite a few nouns to describe the situation - synonyms of ruckus
disturbance, big scene, bother, brawl, commotion, disorder, disruption, fray, fuss, hubbub, racket, stir, turmoil, upheaval, uproar
The drink parallel of famished is parched.
parch
Dictionary.com main section
5. verb (used without object) to suffer from heat, thirst, or need of water.
Dictionary.com "World English Dictionary" section
2. (tr; usually passive) to make very thirsty: I was parched after the run
Dehydrated is a more clinical term, and would be parallel to malnourished, I think.
Both famished and parched can be used in both formal and informal contexts, although they're frequently used with a bit of hyperbole implied, which skews them toward the informal.
I'm so parched I think I could drink a river.
There are also a lot of idioms out there to signify extreme thirst, such as the "spitting cotton" one mentioned by CopperKettle, but if you're looking for the most straightforward parallel to famished, then you really can't do better than parched.
Best Answer
Short Answer
Since you don't like it, you might say one of the following, depending on how opinionated you want to be (more opinionated can be considered more impolite or more "honest", depending on how you view things and who you are talking to).
Objective Descriptions
A personal affinity for a smell is often subjective, as demonstrated in this dialog:
Stating that one "doesn't like it" means that it's "unpleasant", so that doesn't provide any new information. You may want an objective word to describe the smell other than the unpleasantness. But the more accurate you are, especially for uncommon smells, the less likely it might be understood by the listener.
This above effect may be desirable. If not, you can use a more generic description:
Or you can go even more generic, as follows:
And the most generic is simply to indicate the smell as "the one that is currently observable in the environment":
More elaborate options for literary effect.
One way to gain more insight and options in language-use is to perform a Google search using a "wildcard" asterisk, which will match anything, as demonstrated in Google Search: "the*smell of the hospital":1,2
The above sample, from the first few result pages, indicates "antiseptic" and "sterile" as common descriptions.3 The smell is likely caused by various disinfectants, most notably iodoform (though the use of that chemical is declining in favor of more odorless disinfectants).
The words you use to describe this depends on the goal of your speech or writing, keeping your audience in mind. Not every hospital has the same smell, and people react differently to it - some even enjoy the smell. The most broadly acceptable description would be "hospital smell" since that allows each person to "fill in the blank" with their own experience, and so its the most accurate description from an audience's experiential point of view. However, if you're writing a crime drama, you might use more colorful words to engage the reader's senses and heighten corresponding emotions and themes:
1. Internet search engine results can be helpful to provide quick answers to language usage. But these results can also be highly inaccurate, and cannot be relied upon to provide statistical significance of actual usage. For more accurate analysis of language usage, one needs to refer to various corpora (link).
2. It's interesting to note that one gets slightly different Google results from "the*smell of the hospital" and "the * smell of the hospital". The latter has spaces around the wildcard.
3. Keep in mind note 1.