It's not very possible at all.
companies that do not drug test their workers
A drug or treatment that cures or controls the symptoms of a disease is known as a curative drug.
If you meant "What is a drug name used by several companies?" then the answer would be a generic drug. An example of a generic drug would be aspirin.
there is no drug it just happens
Drug trials help evaluate the safety of a drug compound in human population and its pharmacological efficacy. Drug trials also help companies identify how well the drug works for a given disease and what side effects to expect. The data extrapolated from the study is used to get FDA approval to market the drug and is used by doctors and pharmacists for medical treatments.
Possible, but very unlikely. Think about it, the companies that make drug tests and perform them are in the business of one thing only; to make sure that they can accurately test for drugs.
Translation: ¿Estás libre de drogas y de enfermedades? The sentence is the same if it is declarative, just like English. I.e. "You are drug and disease free?" is the same as "You are drug and disease free."
Marijuana is a drug, not a disease..
Both - and neither ! There is not enough information in the question to formulate an answer !
Yes. However, while it is sometimes possible for felons to find CDL driving jobs, any drug related charges will have most companies throwing out your application the moment they see it.
Many companies do not drug test, but they reserve the right to test you at any time without warning.
The possible diagnoses for aches and chills is extensive. It can include infectious disease, rheumatic disease, an drug reactions, among others. See your health care provider, who can get more information to narrow the possible causes.