The phrase "affected by something" is correct and usable in written English.
It can be used to describe a situation where someone or something is influenced or impacted by an external factor.
Example: "The community was significantly affected by the recent economic downturn."
Alternatives: "influenced by something" or "impacted by something".
Several years ago, Buchanan's mother was affected by something called transient global amnesia.
I couldn't risk our chances being affected by something so relatively unimportant.
System accuracy has also been affected by something that is out of nature's control: the military-political complex.
"If a good proportion of test match results are affected by something as arbitrary as the toss, there needs to be a case for abandoning tradition once more".
Some people worry that sales of antiques are being affected by something that has nothing to do with the economy: changing tastes.
By demonstrating that exposure to X rays can cause mutations in the genes and chromosomes of living cells, he was the first to prove that heredity could be affected by something other than natural selection.
In other words, a change in something is affected by how big that something was beforehand.
It challenges their sense of perfect autonomy; to admit to a feeling of any kind suggests they can be affected by someone or something outside of them.
You're not going to get anywhere if you are so greatly affected by someone or something.
I make my films because I'm affected by a situation, by something that makes me want to reflect on it, that lends itself to an artistic reflection.
They are smitten because of the love potion, but something yields within Tristan by the end of it: his sexuality changes from that of the impatient, manly knight to something something entirely affected by Isolde: he is in the world of perfume, rose petals and silk sheets that, as Dreyfus's book reveals, was Wagner's private world with Mathilde.
