You are free to spice your food as you wish. Some people just like to use salt and black pepper. I have sometimes used a mixture of ketchup, mustard, and mayonnaise, which works very nicely for some dishes. You can use barbecue sauce (which comes in many different varieties) if you like. Experiment with seasoning and find out what tastes good to you.
Turmeric Powder is one substitution.
You can use a combination of cumin, turmeric, coriander, and other spices to replace curry powder in a recipe.
Turmeric is yellow in an acidic solution.
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Turmeric is a common substitute for saffron because saffron is very expensive to buy but if a recipe calls for turmeric you can use saffron instead.
Yes, you can generally use turmeric if you are allergic to aspirin and ibuprofen, as turmeric is a natural spice and not chemically related to these medications. However, it's important to consult with a healthcare professional before using turmeric, especially if you have other health conditions or are taking other medications. Turmeric may have blood-thinning properties and could interact with certain medications, so professional guidance is advisable.
Use bleach.
There is no real substitute for saffron. However, you can use turmeric (but be careful when using as turmeric, it has a very strong taste and a little bit too much can overpower the flavour of the dish).
A piece of turmeric which when crushed gives you a turmeric powder
turmeric: pasupu పసుపు
Cayenne Pepper, Perhaps? Used sparingly, at least compared with the amount of chili powder you would normally used.
Turmeric typically lasts for about 2-3 years before it goes bad, as long as it is stored in a cool, dark place away from moisture and sunlight.