もしあなたが料理レシピの本を発売したら、みんな病気になっちゃうかも：P

と冗談っぽく言いたいのですが、どんな言い方がいいと思いますか？

if you came out with recipe book,people might be get sick.

他に何か面白い言い方があれば教えて欲しいです。＾＾

came out with your receipe book と、私ならyourを入れます。

be + getは文法的に変です。
　be sick か　get sickでいいと思います。私ならこういうニュアンスの場合might ではなく、could を使います。 　

if you going to publish a cooking book with your recipe, make sure you have a good lawyer. 　

If you ever publish a cookbook, make sure to have an ad of pept-bismol!

あれ？ピンクのお腹痛いとき飲むの、なんていいましたっけ？

　

In our usual way of speaking we would say: "If you ever publish a cookery book a lot of people are GOING TO Get Sick."

Only when being polite do we say "...could get sick."

We convey most of the meaning with our intonation and facial expression, so don’t get alarmed by the direct speech.