The following criteria is provided for health care professionals.

Inclusion Criteria:

* Histologically proven acute myelogenous leukemia (AML) or advanced myeloid malignancy \[myelodysplasia; chronic myelomonocytic leukemia (CMML); or chronic myeloproliferative disease (MPD) each with \>= 10% myeloblasts in blood or bone marrow\]
* For patients with de novo AML: must not be a candidate for standard induction therapy based upon age, co-morbidities, patient choice, high risk features known to have poor outcomes with standard induction therapy (ELN high risk disease by cytogenetics, deoxyribonucleic acid \[DNA\] mutation profile or TP53 mutation)
* Patients with advanced myelodysplastic syndrome (MDS), secondary AML, relapsed/refractory AML, prior hypomethylating agent are eligible
* Patients must give informed consent
* Patients must have an Eastern Cooperative Oncology Group (ECOG) performance status =\< 2
* Total bilirubin \< 2 x upper limit of normal (ULN)
* Aspartate aminotransferase (AST) (serum glutamic-oxaloacetic transaminase \[SGOT\])/alanine aminotransferase (ALT) (serum glutamate pyruvate transaminase \[SGPT\]) \< 2.5 X institutional ULN
* Creatinine \< 2 mg/dL

Exclusion Criteria:

* White blood cell (WBC) uncontrolled (\> 15,000/uL) despite hydroxyurea or cytarabine x 3 days. Known central nervous system (CNS) AML
* Serious concomitant systemic disorders (including active infections) that would compromise the safety of the patient or compromise the patient?s ability to complete the study, at the discretion of the investigator. Pregnant patients are excluded
* History of allergic reactions attributed to compounds of similar chemical or biologic composition to Salsalate or other agents used in the study. Examples include aspirin
* The effects of venetoclax and decitabine or 5-azacytidine on the developing human fetus at the recommended therapeutic dose are unknown. For this reason and because therapeutic agents used in this trial are known to be teratogenic, women of child-bearing potential and men must agree to use adequate contraception (hormonal or barrier method of birth control; abstinence) prior to study entry, for the duration of study participation and for 24 weeks after. Should a woman become pregnant or suspect she is pregnant while participating in this study, she should inform her treating physician immediately
* Patients with immune deficiency are at increased risk of lethal infections when treated with marrow-suppressive therapy, therefore, known human immunodeficiency virus (HIV)-positive patients receiving combination anti-retroviral therapy are excluded from the study because of possible pharmacokinetic interactions with treatment medications or other agents administered during the study